Board Thread:Pokémon Help/@comment-31398341-20171026040947/@comment-31398341-20180101165849

Endebros wrote: Ferrothorn with power whip is actually able to beat gothitelle.

0 Atk Ferrothorn Power Whip vs. 252 HP / 0+ Def Gothitelle: 118-139 (34.3 - 40.4%) -- guaranteed 3HKO after leech seed

Ferrothorn is able to kill gothitelle before it's rest cycle ends. Tickle, Charm or Reflect are usually used for the last slot though. So unless you use the fourth slot for Toxic, Gothitelle traps and beats Ferrothorn.